Laur IVAN

Android: Provide Local Asset in Testing

In the past few days I had a little bit of a problem: InstrumentationTestCase gives access to local assets while AndroidTestCase gives access to getAssets() for assets specific to testing. I had a scenario to test where I get a file from my local src/androidTest/assets directory while the code would need to write some files in /data/data/my.package.name.test/files directory. Quite unfortunate I’d say. My solution was to create an InputStream method based on this answer, to cover both cases. The code is:

private InputStream getAssetStream(Context context, String fileName)
    throws IOException {
    InputStream result;
    try {
        result = context.getResources().getAssets().open(fileName);
    } catch (IOException e) {
        result = this.getClass()
            .getClassLoader()
            .getResourceAsStream("assets" + File.separator + fileName);
    }
    if (result == null)
        throw new IOException(
            String.format("Asset file [%s] not found.", 
                fileName)
        );

    return result;
}

private InputStream getAssetStream(Context context, String fileName)

throws IOException {

InputStream result;

try {

result = context.getResources().getAssets().open(fileName);

} catch (IOException e) {

result = this.getClass()

.getClassLoader()

.getResourceAsStream("assets" + File.separator + fileName);

}

if (result == null)

throw new IOException(

String.format("Asset file [%s] not found.",

fileName)

);

return result;

}

This way, if the method is called from…read more

Oct.10

C Optimisation – 2005 style

Posted by laur in Software

TL;DR: This post is about an experience I had in 2004 and it’s part of my consolidating technical posts I wrote in time. It may or may not be relevant to today’s technologies. I was trying to optimize a bit of code and found out that 2 if() statements are quicker than a case with true/false. and an if/else case is WAY quicker!!! All with various optimisation levels (from nothing to O3 to O3 + architecture optimisations). Odd. one might believe that the switch/case statement would create a static jump…read more